Speed-changing mechanism.



No. 857,357. PATENTED JUNE 18, 1907. E; A. MULLER.

SPEED CHANGING MECHANISM.

A1=1 LI0ATI01I FILED MAR. 24, 1905.

50 M fl. 1N VENTOR.

. r' TTORNEY.

2 SHEETS-SHEET 1.

PATENTED JUNE 18,- 1907 E. A. MULLER. SPEED CHANGING MECHANISM.-

, APPLICATION FILED MAR. 24, 1905.

' ZSHEETS-SHEET 2 M a, MQ NV/j/TOR ITNESSES:

FIG- 6.

a citizen of the UnitedStates,i resii' State of Ohio, have In the particular embodiment of myv in- I 5 section of -my im rovenient.

- Fig. 8, is a E, which is 4. shaft, B,

a cap-nut, e, and on the other by .NITED srArns PATENT FFCE.

MADisoNvILLE, onIo, Assreuon To THE KING.

' MACHINE TOOL COMPANY, OF WINTON PLACE, OHIO, A CORPORATION OF OHIO.

SPEED-CHANGING MECHANISM,

Patented June'18,190'7.

hpplieation filed March 24,1906. Serial No: 251,860.

To all whom it may concern;

Be it knownthat-I, EDWARD A. MULLER,

at Madisonville, in the .county of Hamilton and invented new and useful Improvements in- S eed Ohanging Mechanism, of which thefol owing is a specification.

This invention relates to speed changing mechanism employing positive clutch en- 10 gaged gearing, and while articularly-ada ted to use on machine too s, may be used or any purpose. Its construction is such that with one lever any one of a series of gears may be uickly and positively engaged, and l e so engaged all the other clutches are positively held disengaged; neither between ,points of engagement can there be any chance engagement, therefore no injury can result to the machine by any inadvertvention selected for illustration:-Figure1,

- is a side elevation of a boring mill, showing m y. improven1ent applied. Fig. 2, is an axial Fig. 3, is a plan view ofthe s'iifter shaft: Fi 4, is a cross-section through the clutch, shi ter arm,

' change gear shaft, shifter shaft, pin, and attendant parts, along line X, X, Fig. 2. Fig.

3 5, is a face elevation of one of the gears on shaft, O. Fig. 6, is a side elevation of one of the gears on shaft, 0, on the clutch side. Fig. 7, is a planview of the clutch member. plan view of that part of sleeve, pierced by shifter arm pins, with both ends broken away. I

In the drawings, A, designates the frame of theinachine and, a, the housing of the change speed mechanism. Within this housing isa preferably horizontal in position, and shafts, O, and 1), parallel to B.

B, is a shifter shaft incased throughout that ortion Within the housing, a, in a sleeve E, W ich sleeve is terminated on one end by an index cylinder, F. Into this index cylinder shaft B, projects and to that end of this shaft, is rotatively attached as by key, I), at right angles to it, alever handle, 5, held in place 5 in any convenient manner as by washer, b

'andnut, 6 while the'cylinder itself has short of the cylinder. Through these slots extogether.

tend the lever, b, and the slots themselves, of which there may be any number, may for'conven ience in explaining the operation, be designated'asf ,f f, f*. The shaft, B, is adapted to rotate only the handle, 6, rotates in the slots 'of the index cylinder and has a longitudinal motion equal tothe motion of the lever, b,,in theslot, f.

The portion of 'the. shifter shaft, B, that o erates within the sleeve, E, has a suitable s aped longitudinal groove, 6 and extendin from the .groove, 6 sie thereof, and that side opposite the side of the slot, f, on which slots f, to f, are placed,. are cut grooves. There will be twice. as many grooves, b b", 1), b circumferential in direction as there are pairs of distance the 4 gears,' adapted to be 0 erated by the clutches on gear shaft, O. T grooves, 6 b, inclined obliquely to the right from groove, b as shown in Figs. 2 and 3, as there are said pairs of gears and a like number of grooves, b b inclined obliquely to the left from groove 6 These grooves are so arranged that when either plunger pin, 9, or g, enters an oblique groove, the other of said. pins will enter one of the straight grooves and vice versa, so that both pins ere will be as many enter grooves at the same time, or neither.

These gFODVeS, to b, are of size and shapeg, or g fastened se-.

adapted to receive a I curely in clutch shi ter yoke, G, or G one end of which is made in the form of a sleeve adapted to fit loosely on sleeve, E. As

shown in the .drawing each pin fits closely. and is threaded into through a shifter yoke,

The sleeve, E, has a longitudinal slot, (2, for the pin, 9, where' it pierces, E, in entering the grooves in shaft, B.

The shifter yoke, G, is adapted to fit loosely in the circumferential groove, h, of the double clutch member, H. This clutch mom,- ber is splined to the sleeve, 1, between two of the gears which are arranged in pairs, and sleeve, 1, is keyed'to the shaft, O, by key, J. The sleeve, I, is longer than the hub of clutch member, H, so that loose gears, K

and L, are prevented from getting too close The gear, K, is held against receding from the clutch member by any suitable means as collar, M, with its set-screw, m, or the hous- Gears, L, and N, abut, and hence. hold each other in lace, and gear, 0, is held outwardly by a col ar, M, with its set screw, m, or the housing. Each of the ears whichare arranged in pairs has a fixe clutch member cast or rigidly attached to its inner hub face; which clutch members are designated by the same small letter as the large used to symtered like those in the first except that each has the next "higher index numeral. Clutch teeth, h', on each side of the clutch member, H, and h on each side of the clutch member, H are adapted to engage the gear clutch teeth adj oining.

At one end of shaft, 0, rotatively attached to it, is a driven gear, C, which may be a worm wheel, meshing with and actuated by the worm, T, rotatively attached to the shaft, 11, driven by outside means not shown.

Shaft, D, has gears, P, Q, R, S, rotatively attached to it, in any convenient manner as by keys, p, q, r, s, and said gears are of such size and so arranged that they mesh with the gears on shaft, C, securing rotation of shaft, D, at any of the several speeds. At one end of shaft, D, rotatively attached to it, is a gear, I), from which power is transmitted to gear, U, and shaft u, and the speed of their rotation will depend upon which of the gears on shaft, U, is engaged by its clutch member.

The operation is as follows: Assuming that the handle I), is at some point in the slot,f, let it be drawn to the point where slot,"

f enters slot, f, and rotated so that said handle will enter slot, f The shaft, B, will then be in such a position that yoke, pin, g, enters groove 6 when yoke, pin, 9 will enter groove 11 It is apg. front that pin, g, and its yoke will bear to the left and force clutch member, II, in the same direction so that teeth, 7L2, on that side of the clutch member, H, engage teeth, Is, on the gear, K, whereupon shaft, C, which is constantly rotating, causes gear, K, to rotate, and K, transmits motion to gear, P, which being keyed to shaft. D, rotates said shaft and attached gear,iD and througl'i, D, transmits motion to gear, U, and shaft, u. Pin, g, enters, 11 which being a straight slot, holds through the pin and its yokc, the clutch member, H midway between gears, N and O, and disenga ed fronnboth. Againrotating the lever,

, ack to slot,f, let it be drawn to the point Where-slot, f, enters slot, f,'and rotates b, so

that it enters, As a result the position of parts will be those shown in Fig.2, where' pin, ,g, entering groove 1), has been pushed to N,and R, shaft, D, etc.

position of lever, b, in like manner but to ,v

the right carrying clutch member, H, into contact with the clutch teetlgii t, ,of the gear, L,tcausing,-L, to rotate gear, Q,,' shaft, D, etc; While pin, 9, having entered the straight groove, b, held the clutch member, II, out

of contact with,both gears, N and 0. Again changing the position of lever, b, in the same manner as before, but to f, pin, g, enters straight roove, b and pin, 9, enters oblique groove, 5 resulting in clutch member, H, being held disengaged and clutch H, engaging clutch teeth, n, of gear, N, thus rotating gears, Again changing the the shaft, 6, is shifted to such aposition that pin g, enters straight groove, b", holding clutch member, H, disengaged and pin, 9 enters, b ",throwing the clutch member, H, into mesh with the clutch member, 0, of the gear, 0. The rotation of gear, 0, with shaft, C, causes rotation of shaft, D, and attendant parts through rotation of gear, S.

Additional gears similarly arranged and a corresponding increase of suitable grooves in shaft, B, and slots in index case, F, will su ply such other speeds as are desired.

f claim as my invention and desire to secure by Letters Patent of the United States I 1. In a variable speed mechanism, the combination of a driving shaft, different sized driving gears thereon provided with combination of a driving shaft, normally loose gears thereon provided with clutch members,-a plurality of double clutch members on the shaft and shiftable between pairs of gears, a unitary longitudinally-shiftable axially-turnable shaft, and connections be tween said shaft and the double clutch mem bers, said shaft capable of moving one double clutch into operative engagement with a loose gear and coordinately holding all other double clutches inoperative.

3. Ina variable speed mechanism, the combination of a driving shaft, normally loose'gears thereon, arranged in pairs, said gears having clutch teeth on their contiguous sides, a double clutch rotatively attached to and slidable on the shaft between the gears IIO constituting each pair, a yoke adaptedto actuate each clutch, a shifter shaft having a longitudinal groove and other grooves extending therefrom, some bearing obliquely sues-i toward each end and others circumferential in direction, soarranged as to permit but one yoke connection to enter any oblique groove at any time, all others entering strai ht gfiogves and means for adjusting said shi ter s a t.

4. In a variable speed mechanism, the combination of a driving shaft, normally loose, different sized driving gears-fitted with clutch teeth mounted thereon, clutch mem- 5. In a change speed mechanism, a shifter shaft having a longitudinal groove and other grooves extending in one direction-there from, some bearing obliquely toward each end, and others circumferential in direction, a clutch yoke provided with pins, said grooves so arranged as to permit but one yoke pin to enter obliquegrooves at any time, all others entering straight rooves,

means for adjusting said shifter shaft.

6. In a change speed mech anism, the combination of change gears v rovided with clutch members, shiftable c n'tch members engageable with the first named members, a clutch yoke provided with pins said yoke being projected was to form a loose sleeve, a shifter shaft having a longitudinal groove and clutch members operable by the yo re, and

other grooves I extending one direction therefrom, some bearing obliquely toward.

eachend, and others circumferential in di- T801301], sa1d grooves so arranged as toiperm1t but one yoke pm to enter oblique grooves at any time, all others entering straight grooves, a fixed sleeve surrounding the shaft andhaving longitudinal slots adapted to allow a free limited movement of each-yoke pin, and means for adjusting the shifter shaft. '7. In a chan e speed mechanism, the combination of c ange gears rovided with clutch members, hiftable c utch members" engageable with the first-named members, a clutch yoke provided with pins sa1d yoke being projected so as to form a loose sleeve, a

shifter shaft having a longitudinal groove and other grooves extending in one direction I therefrom, some bearing obliquely toward each end, and others circumferential in direction, said grooves so arranged asto allow but one yoke pin to enter oblique grooves at any time, all others entering straight grooves, a fixed sleeve surrounding the shaft and having longitudinal slots adapted to allow a free limited movem'entof each voke pin, a handle rigidly attached .to the shifter shaft,iand an index cylinder ha vinga longitudinal slot and other slotsv'arrangcd substantially at right angles thereto arranged to receive said handle and hold the same when the shifter shaft isin operative position.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit,.

nesses.

I EDWARD A. MULLER.

Witnesses:

BURTON Gnnee, Josnrn R. GARDNER. 

